Elastohydrodynamic lubrication in rotational atherectomy: Fluid film thickness characteristics and reduction of vascular damage risk

Liang, Yuwen; Satake, Urara; Enomoto, Toshiyuki

Tribology International, 2025, 210, 110798

Number of Access:17（2025-08-14 18:27 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/102204

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Title
Elastohydrodynamic lubrication in rotational atherectomy: Fluid film thickness characteristics and reduction of vascular damage risk
Creator
CreatorName
Liang, Yuwen
NRID
1000070828409 1000070828409
researchmap permalink
su0413 su0413
Scopus Author ID
37102491700 37102491700
CreatorName
Satake, Urara
NRID
1000020403149 1000020403149
researchmap permalink
read0076938 read0076938
Scopus Author ID
55702379200 55702379200
CreatorName
Enomoto, Toshiyuki
Subject
Elastohydrodynamic lubrication
Film thickness
Geometry improvement
Surgical device
Description
Liang Y., Satake U., Enomoto T.. Elastohydrodynamic lubrication in rotational atherectomy: Fluid film thickness characteristics and reduction of vascular damage risk. Tribology International 210, 110798 (2025); https://doi.org/10.1016/j.triboint.2025.110798.
Abstract
In rotational atherectomy, a fluid film separates rotating burr and blood vessel, preventing vascular damage and involving elastohydrodynamic lubrication (EHL). Investigating fluid film thickness is necessary, as insufficient thickness increases vascular damage risk. This study examined damage depth on vascular phantom, revealing fluid film thickness characteristics and trends are similar to classical point contact EHL. The influence of burr and vascular phantom geometry was discussed with classical point contact EHL analysis, leading to a strategy: increasing burr's radius on tangential direction that can reduce damage risk by thickening fluid film. The findings demonstrate that classical point contact EHL provides valuable insights into this fluid film and can guide strategies for reducing vascular damage risk by improving fluid film thickness.
Publisher
Elsevier Ltd
Source Title
Tribology International
Volume (Issue)
210
Page
110798
Date of Issued
2025-05-19
Language
English
Handle URL
https://hdl.handle.net/11094/102204
PISSN
0301679X
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1016/j.triboint.2025.110798
Access Rights
open access
CopyRight
This article is licensed under a Creative Commons Attribution 4.0 International License.
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article